Segunda parte pos Dialogos da imagem da vida Christiam : o primeiro De [sic!] da tranquillidade da vida. O segundo Da discreta ignorancia. O terceiro Da verdadeyra amizade. O quarto Das causas. O quinto Dos verdadeyros [et] falsos b[ien]es /

Mode of access: Internet.

Enchiridio[n] delos tie[m]pos /

Mode of access: Internet.

K. Chatzopoulou Hyperanthrōpos : diēgēma.

Mode of access: Internet.

Poesás del canciller / publicadas pos Albert F. Kuersteiner.

Mode of access: Internet.

Du beau dans la nature, l'art et la pošie : ťudes esthťiques /

Mode of access: Internet.

Listy polskie; zeszyt próbny pisma poświęconego sprawom politycznym polskim wogóle i sprawom królestwa w szczególności.

Mode of access: Internet.

Polska jako naród i jako państwo : jéj [sic] posłannictwo w organizmie [sic] świata ludzkości /

"Wyjątek z Fundamentów Budowy Społecznej."

Contextos institucionales en pos de la permanencia escolar : Un estudio de casos en escuelas secundarias de gestión estatal de la Ciudad de Buenos Aires

En un escenario caracterizado por la ampliación del acceso a la educación secundaria, las escuelas enfrentan hoy diversos desafíos para responder a las demandas de inclusión sin desatender a su función formadora. Las preocupaciones se centran en encontrar modos de atender a las diversas necesidades que los jóvenes presentan a lo largo de su carrera educativa, creando las condiciones para que todos puedan crecer y formarse en su paso por la escuela secundaria. En este marco, desde mediados de 2009, un equipo de investigación con sede en la Dirección de Investigación y Estadística del Ministerio de Educación de la Ciudad de Buenos Aires, desarrolla un estudio de corte cualitativo en bachilleratos y escuelas técnicas de la ciudad que lograron construir un denso entramado institucional para sostener la escolaridad de estudiantes que provienen de sectores sociales históricamente excluidos de este nivel educativo. El objetivo central de esta investigación es analizar las interrelaciones que se establecen entre las prácticas institucionales y las acciones de los estudiantes en pos de sostener la escolaridad. Al mismo tiempo, se busca identificar los aspectos del contexto institucional que estimulan el involucramiento de los estudiantes y analizar cómo este último interviene en la promoción de la retención escolar. En esta ponencia se exponen algunos resultados de esta investigación, aún en curso, buscando recuperar las miradas que los distintos actores escolares (directores, profesores, tutores y preceptores) construyen en torno a la tensión entre abandono y permanencia escolar y las prácticas y estrategias que éstos despliegan, orientados por la necesidad de hacer posible una escuela para todos

Resolution and characterisation of multiple isoforms of bovine kappa-casein by 2-DE following a reversible cysteine-tagging enrichment strategy

Visualisation of multiple isoforms of kappa-casein on 2-D gels is restricted by the abundant alpha- and beta-caseins that not only limit gel loading but also migrate to similar regions as the more acidic kappa-casein isoforms. To overcome this problem, we took advantage of the absence of cysteine residues in alpha(S1)- and beta-casein by devising an affinity enrichment procedure based on reversible biotinylation of cysteine residues. Affinity capture of cysteine-containing proteins on avidin allowed the removal of the vast majority of alpha(S1)- and beta-casein, and on subsequent 2-D gel analysis 16 gel spots were identified as kappa-casein by PMF. Further analysis of the C-terminal tryptic peptide along with structural predictions based on mobility on the 2-D gel allowed us to assign identities to each spot in terms of genetic variant (A or B), phosphorylation status (1, 2 or 3) and glycosylation status (from 0 to 6). Eight isoforms of the A and B variants with the same PTMs were observed. When the casein fraction of milk from a single cow, homozygous for the B variant of kappa-casein, was used as the starting material, 17 isoforms from 13 gel spots were characterised. Analysis of isoforms of low abundance proved challenging due to the low amount of material that could be extracted from the gels as well as the lability of the PTMs during MS analysis. However, we were able to identify a previously unrecognised site, T-166, that could be phosphorylated or glycosylated. Despite many decades of analysis of milk proteins, the reasons for this high level of heterogeneity are still not clear.

DEVELOPMENT OF INTEGRATED BIOPROCESSING TECHNOLOGIES FOR THE PRODUCTION OF PECTIC OLIGOSACCHARIDES (POS) FROM AGRO-PROCESSING RESIDUES

This research deals with the production of pectic oligosaccharides (POS) from agro-industrial residues, with specific focus on development of continuous cross flow enzyme membrane reactor. Pectic oligosaccharides have recently gained attention due to their prebiotic activity. Lack of information on the continuous production of POS from agro-industrial residues formed the basis for the present study. Four residues i.e sugar beet pulp, onion hulls, pressed pumpkin cake and berry pomace were taken to study their pectin content. Based on the presence of higher galacturonic acid and arabinose (both homogalacturonan and rhamnogalacturonan) in sugar beet pulp and galacturonic acid (only homogalacturonan) in onion hulls, further optimization of different extraction methods of pectin (causing minimum damage to pectic chain) from these residues were done. The most suitable extractant for sugar beet pulp and onion hulls were nitric acid and sodium hexametaphosphate respectively. Further the experiments on the continuous production of POS from sugar beet pulp in an enzyme membrane reactor was initiated. Several optimization experiments indicated the optimum enzyme (Viscozyme) as well as feed concentration (25 g/L) to be used for producing POS from sugar beet pulp in an enzyme membrane reactor. The results highlighted that steady state POS production with volumetric and specific productivity of 22g/L/h and 11 g/gE/h respectively could be achieved by continuous cross flow filtration of sugar beet pulp pectic extract over 10 kDa membrane at residence time of 20 min. The POS yield of about 80% could be achieved using above conditions. Also, in this thesis preliminary experiments on the production and characterization of POS from onion hulls were conducted. The results revelaed that the most suitable enzyme for POS production from onion hulls is endo-polygalacturonase M2. The POS produced from onion hulls were present in the form of DP1 -DP10 in substituted as well as unsubstituted forms. This study clearly demonstrates that continuous production of POS from pectin rich sources can be achieved by using cross flow continuous enzyme membrane reactor.

Transformational-transactional leadership and upward influence:the role of Relative Leader-Member Exchanges (RLMX) and Perceived Organizational Support (POS)

By utilizing the resource theory of social exchange (Foa & Foa, 1974), we attempted to cast light on the dynamics of the relationship between transformational-transactional leadership and employees' upward influence tactics. Using data collected in two time points (N=200, 1. year apart), we found perceptions of transformational leadership (Time 1) to be positively related to the use of soft and rational upward influence tactics (Time 2) whereas transactional leadership (Time 1) was positively related to the use of soft and hard upward influence tactics (Time 2). We also found support for a 3-way interaction between transformational-transactional leadership, relative Leader Member Exchanges (RLMX) and Perceived Organizational Support (POS) on employees' upward influence tactics. Specifically, in resource-constrained conditions (low RLMX and low POS), employees were likely to use soft tactics to influence a manager they perceived as transformational to a greater extent than in resource-munificent conditions. They were also likely to employ higher levels of soft and hard tactics to influence a transactional manager in resource-constrained rather than in resource-munificent conditions. © 2012 Elsevier Inc.

Self-organization in social tagging systems

Individuals often imitate each other to fall into the typical group, leading to a self-organized state of typical behaviors in a community. In this paper, we model self-organization in social tagging systems and illustrate the underlying interaction and dynamics. Specifically, we introduce a model in which individuals adjust their own tagging tendency to imitate the average tagging tendency. We found that when users are of low confidence, they tend to imitate others and lead to a self-organized state with active tagging. On the other hand, when users are of high confidence and are stubborn to change, tagging becomes inactive. We observe a phase transition at a critical level of user confidence when the system changes from one regime to the other. The distributions of post length obtained from the model are compared to real data, which show good agreement. © 2011 American Physical Society.

Selecting POS Systems for Table Service Restaurants

A point-of-sale system can enhance decision making, operational control, guest service, and revenues. However, not all POS systems offer the same features and potential for profit improvement. The author discusses those factors which are critical to POS system selection for table service restaurants